Absolute alcohol can be prepared from rectified spirit byA. distillati – InterviewSolution

InterviewSolution

1.	Absolute alcohol can be prepared from rectified spirit byA. distillation under reduced pressureB. azeotropic distillation with benzeneC. Fractional distillationD. Keeping over fresh CaO for few hours followed by distilling .
Answer» Correct Answer - B::D Absolute alcohol is manufactured from rectified spirit by azeotropic distillation with benzene.On a small scale, in laboratory, absolute alcohol can be prepared by keeping rectified spirit over fresh CaO (which absorbs water) for few hours followed by distillation

Discussion

No Comment Found

Related InterviewSolutions

Arrange the following compounds in increasing order of their acid strength: Propane-1-ol, 2, 4, 6-trinitrophenol, 3-nitrophenol, 3,5-dinitrophenol , phenol, 4-methylphenol.
State the equations for the preparation of the following compounds . (Equations need not to be balance). (i) Chlorobenzene from aniline (in two steps ) (ii) N-Propyl amine from ethyl chloride (in two steps )
The ratio of molecular mass to empirical formula mass for glucose isA. 2B. 4C. 6D. 8
Write the structures for the Ethoxybutane compounds.
Write the structures for the Ethoxyethane compounds.
Give the major products that are formed by heating of the `CH_(3)-CH_(2)-CH_(2)-O-underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-CH_(2)-CH_(3)` ethers with HI.
Identify the reactant needed to form t-butylalcohol from acetone.
Give the major products that are formed by heating of the `CH_(3)-CH_(2)-overset(CH_(3))overset(|)CH-CH_(2)-O-CH_(2)-CH_(3)` ethers with HI.
Suggest a suitable oxidising reagent for the following conversions: A. a.`MnO_(2)` in `(A)` and `CrO_(3)` (in glacial acetic acid) in `(B)`.B. b.`CrO_(3)` in (A) and `MnO_(2)` in `(B)`.C. c.Both are correctD. d.Both are incorrect
The following is not an appropriate reaction for the preparation of t-butyl ethyl ether. `C_(2)H_(5)O"Na"+CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-Cl to CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-OC_(2)H_(5)` Write a suitable reaction for the preparation of t-butylethyl ether.